Stability analysis and concept extension of harmonic decoupling network for the three-phase grid synchronization systems
发布时间：2021-07-29
点击次数：
影响因子：4.63
DOI码：10.1016/j.ijepes.2017.01.003
发表刊物：International Journal of Electrical Power & Energy Systems
关键字：Grid synchronization; Harmonic extraction; PLL; HDN; Distributed generation system
摘要：The harmonic decoupling network (HDN) structure has been widely used as prefilters in grid synchronization techniques, which can accurately extract the fundamental positive- and negative-sequence components and interested harmonics in unbalanced and distorted grid voltages. However, the stability of general HDN is seldom discussed. In this paper, the transfer function expression of general HDN is educed and its stability is proved by the root locus method. Also, it is found that HDN is a multiple-order complex vector filter (MOCVF) in essence. To extend the concept of HDN, the generalized MOCVF (GMOCVF) is proposed. Moreover, an optimized solution to the pole assignment of GMOCVF is presented. As a sequence, GMOCVF can be easily designed to achieve faster dynamic response or better harmonic attenuation compared with HDN under equivalent conditions. In the end, the effectiveness of GMOCVF and the performance comparison between HDN and GMOCVF are verified by the simulation and experimental results. (C) 2017 Elsevier Ltd. All rights reserved.
合写作者：Su, Me, Wang, Hui, Yuan, Wenbin
第一作者：Luo, Zhaoxu
论文类型：期刊论文
通讯作者：Sun, Yao
论文编号：16848405
学科门类：工学
一级学科：电气工程
文献类型：J
卷号：89
页面范围：1-10
ISSN号：0142-0615
是否译文：否
发表时间：2017-07-01
收录刊物：SCI、EI
附件：
Stability analysis and concept extension of harmonic decoupling.pdf